一、获取默认的target
[root@centos7 ~]# systemctl get-default
graphical.targetcentos
二、取消图形界面ide
[root@centos7 ~]# systemctl set-default multi-user.target
Removed symlink /etc/systemd/system/default.target.
Created symlink from /etc/systemd/system/default.target to /usr/lib/systemd/system/multi-user.target.centos7
三、图形界面启动
[root@centos7 ~]# systemctl set-default graphical.target
Removed symlink /etc/systemd/system/default.target.
Created symlink from /etc/systemd/system/default.target to /usr/lib/systemd/system/graphical.target.get
四、设置target 以后重启机器
reboot it